Some background....

I am using the floor tiles of Sovngarde in an exterior cell of Tamriel for use in a castle courtyard. Specifically the pieces SOVintFloorCor01, SOVintFloorMid01, SOVintFloorStr01. Since they are outside I wanted them to have LOD. I duplicated the objects, made them my own, and designated the regular meshes and textures as the LOD models.

Okay, now here is my problem...I go to generate World LOD, check off only Static Objects, then click Generate, and receive this error after a second.

Using 8 processors/cores.
Creating queue of files to be built...
Building 2304 chunks at level 4.
Building 576 chunks at level 8.
Building 144 chunks at level 16.
Building 36 chunks at level 32.
Building object texture atlas...
Texture atlas build failed with the following errors:
LOD diffuse texture '..\Source\TGATextures\architecture\sovngarde\SOVFloor02.tga' and normal texture '..\Source\TGATextures\architecture\sovngarde\SOVFloor02_n.tga' are not the same size (but should be).

Waiting for build worker threads to finish...
Build canceled. All worker threads have been terminated.
0 LOD object triangles.
0 were rejected (0 degenerate, 0 under landscape).
0 total LOD object vertices.
No major issues detected.

So supposedly the diffuse texture does not match the normal in size? Is this a known issue and/or is there a correction for it? Thanks for any info!